Combination ultrasonic and electrosurgical instrument having slip ring electrical contact assembly

    公开(公告)号:US10945778B2

    公开(公告)日:2021-03-16

    申请号:US15967746

    申请日:2018-05-01

    申请人: ETHICON LLC

    摘要: A surgical instrument includes a body, a shaft assembly rotatable relative to the body, and an end effector at a distal end of the shaft assembly and having an RF electrode operable to seal tissue with RF energy. An electrical contact assembly is arranged proximally of the end effector and is configured to electrically couple the RF electrode with an RF energy source. The electrical contact assembly includes a first electrical contact secured to the body and a second electrical contact secured to the shaft assembly. The first contact is configured to electrically couple with the RF energy source. The second contact is electrically coupled with the RF electrode and the first contact, and is configured to rotate with the shaft assembly relative to the first contact. The first and second electrical contacts are configured to remain electrically coupled throughout rotation of the shaft assembly relative to the body.

    SALINE CONTACT WITH ELECTRODES
    26.
    发明申请

    公开(公告)号:US20190099212A1

    公开(公告)日:2019-04-04

    申请号:US15720822

    申请日:2017-09-29

    申请人: Ethicon LLC

    IPC分类号: A61B18/14

    摘要: An end effector of an electrosurgical device may include a discharge port, an aspiration port, two electrodes, and a diverter formed from a porous material. The diverter includes a matrix having voids to receive fluid from the discharge port. A releasable diverter assembly may include an assembly body configured to receive a pair of electrodes and a diverter composed of a porous material. A shaft assembly of an electrosurgical device may include two electrodes and two fluid cannulae. Each cannula may be disposed proximate to a surface of each of the electrodes. An end effector of an electrosurgical device may include a fluid discharge port, two electrodes, and a diverter disposed therebetween. A proximal edge of the diverter may form a secant line with respect to the end of the discharge port so that fluid emitted by the discharge port is disposed on a surface of the diverter.